Child seat



FIG. 1 is a front perspective view of a child seat showing our ornamental design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in FIGS. 1-3 are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a child seat, as shown and described. 